化工学报2016，Vol.67Issue(z2)：136-141,6.DOI:10.11949/j.issn.0438-1157.20161539
基于椭圆管束菱形受热面的流动与传热性能分析
Simulation on heat transfer and flow characteristics of rhombus heat transfer surface with elliptical tube bundles
袁宝强 1王沛丽 1杜文静1
作者信息
- 1. 山东大学能源与动力工程学院，山东 济南 250061
- 折叠
摘要
Abstract
Rhombus heat transfer surface with staggered circular tubes bundles (CTB) performed high heat transfer capacity,large fluid flow resistance and high efficiency in ash blowing.Based on that,a new rhombus heat transfer surface with staggered elliptical tube bundles (ETB)was proposed.The new heat transfer surface maintained the high heat transfer coefficient and efficiency in ash blowing of CTB,which also showed lower resistance characteristic.2D numerical simulations of rhombus heat transfer surface with CTB and ETB were presented to conduct improving the performance in heat transfer and fluid flow.The effects of different upwind angels (-45°,0°,45°)of ETB were discussed.To obtain an understanding of the physical behavior of thermal and fluid flow,different Reynolds numbers ranging from 3000 to 21000 were calculated.Entropy generation principle was used to investigate the heat transfer performance.Results showed that compared with CTB and other ETB,ETB with 0° upwind angel had higher heat transfer coefficient and lower flow resistance,comprehensive properties of which was better.关键词
椭圆管束/流动/传热/数值分析Key words
elliptical tube bundles/fluid flow/heat transfer/numerical simulation分类
能源科技引用本文复制引用
袁宝强,王沛丽,杜文静..基于椭圆管束菱形受热面的流动与传热性能分析[J].化工学报,2016,67(z2):136-141,6.
